Question

3. 8.F.1.3 Which of the following equations represents a linear function? A. y = 3x2 B. y = 2 - C. y = x + 6 D. y = -x +3 = 6 1 2

Answer 1

A polynomial equation of the form y=f(x) is said to be a linear function if the degree of the polynomial is one.

Consider that

Option A cannot be the correct choice, as its degree is 2.

Option B cannot be the correct choice, as its degree is -1.

Option C cannot be the correct choice, as its degree is 1/2.

Option D will be the correct choice, as its degree is 1.

Thus, it concludes that only option D represents a linear function.